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Composition with denitration function, preparation method and denitration method

A composition and denitrification technology, applied in separation methods, chemical instruments and methods, and dispersed particle separation, can solve the problems of narrow denitrification temperature window, low denitrification efficiency, ammonia escape, etc., and achieve reduced energy consumption, high denitrification efficiency, High safety effect

Active Publication Date: 2022-04-15
GUODIAN NEW ENERGY TECH INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the existing problems of low denitrification efficiency, narrow denitrification temperature window, and ammonia escape when excessive ammonia injection occurs, and provides a Composition with denitration function, preparation method and denitration method

Method used

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  • Composition with denitration function, preparation method and denitration method
  • Composition with denitration function, preparation method and denitration method

Examples

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Effect test

Embodiment 1

[0061] In the primary reactor, the saturated solution of 100g hexane solution (mass fraction is 98wt%, and the solvent of hexane solution is benzene), 40g formic acid aqueous solution (massfraction is 94wt%) and 40g calcium hydroxide is carried out at room temperature Once mixed, the first mixed product is sent into the secondary reactor after 30min, and 18g activated carbon (the particle diameter of activated carbon is 5 μm, and the specific surface area is 2000g / m2) is added in the secondary reactor simultaneously. 2 ), 1g sodium chloride aqueous solution (mass fraction is 10wt%) and 1g potassium chloride aqueous solution (mass fraction is 10wt%) carry out the second mixing at room temperature, obtain the composition with denitrification function after 60min.

Embodiment 2

[0063] In the primary reactor, the saturated solution of 100g hexane solution (mass fraction is 98wt%, and the solvent of hexane solution is benzene), 40g maleic acid aqueous solution (massfraction is 20wt%) and 40g calcium hydroxide is at room temperature Carry out the first mixing, send the first mixed product in the secondary reactor after 30min, add 18g gac simultaneously in the secondary reactor (the particle diameter of gac is 10 μ m, and specific surface area is 1500g / m 2 ), 1g sodium chloride aqueous solution (mass fraction is 10wt%) and 1g potassium chloride aqueous solution (mass fraction is 10wt%) carry out the second mixing at room temperature, obtain the composition with denitrification function after 60min.

Embodiment 3

[0065] In the primary reactor, the saturated solution of 80g hexane solution (mass fraction is 98wt%, and the solvent of hexane solution is benzene), 50g formic acid aqueous solution (massfraction is 94wt%) and 50g calcium hydroxide is carried out at room temperature Once mixed, the first mixed product is sent in the secondary reactor after 30min, and 16g gac is added in the secondary reactor simultaneously (the particle diameter of gac is 5 μ m, and specific surface area is 2000g / m 2 ), 2g sodium chloride aqueous solution (mass fraction is 10wt%) and 2g potassium chloride aqueous solution (massfraction is 10wt%) carry out the second mixing at room temperature, obtain the composition with denitrification function after 60min.

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Abstract

The invention relates to the technical field of environmental protection and catalysis, and discloses a composition with a denitration function, a preparation method and a denitration method. The composition comprises an organic matter, activated carbon, an organic acid, a calcium-containing inorganic matter and an optional auxiliary agent, wherein the organic matter is selected from at least one of alkane with the carbon atom number larger than 5, olefin with the carbon atom number larger than 5 and low-carbon monohydric alcohol. The denitration method comprises the step of contacting the composition with flue gas. The composition with the denitration function is high in denitration efficiency, and compared with an amino denitration agent, the composition with the denitration function is free of secondary pollution and not prone to volatilization.

Description

technical field [0001] The invention relates to the technical field of environmental protection and catalysis, in particular to a composition with denitration function, a preparation method and a denitration method. Background technique [0002] Nitrogen oxides (NOx) are one of the main air pollutants, and their discharge into the atmosphere will cause environmental problems such as acid rain and photochemical smog. The national standard stipulates that the NOx emission of coal-fired boilers shall not be higher than 50mg / Nm 3 , In order to achieve ultra-low emission of NOx, flue gas denitrification technology must be adopted. At present, the main denitrification methods are SCR (Selective Catalytic Reduction) and SNCR (Selective Non-Catalytic Reduction). [0003] The reducing agents used in SCR and SNCR technologies are ammonia water, liquid ammonia or urea. Ammonia water and liquid ammonia have encountered many problems in use, for example, high cost, poor safety, flamma...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/79B01D53/60B01D53/56
CPCY02A50/20
Inventor 董琨高增卓华张俊杰谭厚章杨富鑫韩斌桥李亚巍张磊高思远钱美辰陈庆伟
Owner GUODIAN NEW ENERGY TECH INST
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